Question

Listed below are the hydrostatic and oncotic pressures across a muscle capillary wall.

-Mean capillary hydrostatic pressure = 30 mmHg
-Plasma colloid osmotic pressure - 25 mmHg
-Interstitial colloid osmotic pressure = 10 mmHg
-Interstitial hydrostatic pressure = 5 mmHg
What is the net filtration pressure (in mmHg) for fluid movement across the capillary wall?
a. 5 mmHg
b. 15 mmHg
c. 10 mmHg
d. 25 mmHg
e. 0 mmHg

Answer 1

The calculation yields an NFP of c) 10 mmHg. Hence, option c) is correct.

Step-by-step explanation:

To determine the net filtration pressure (NFP) for fluid movement across a capillary wall, we need to consider both hydrostatic and oncotic pressures. The formula to calculate NFP is as follows:

NFP = (mean capillary hydrostatic pressure + interstitial colloid osmotic pressure) - (plasma colloid osmotic pressure + interstitial hydrostatic pressure)

Using the values provided:

NFP = (30 mmHg + 10 mmHg) - (25 mmHg + 5 mmHg)

NFP = 40 mmHg - 30 mmHg

NFP = 10 mmHg

Therefore, the net filtration pressure for fluid movement across the capillary wall is 10 mmHg, which corresponds to option c.